Syntheses, X-ray Structural Characterizations, and Thermal Stabilities of Two Nonclassical Trinuclear Vanadium(IV) Complexes, (V\\r sub/3sub\\r (μ\\r sub/3sub\\r -O)O\\r sub/2sub\\r )(μ\\r sub/2sub\\r -O\\r sub/2sub\\r P(CH\\r sub/2sub\\r C\\r sub/6sub\\r H\\r sub/5sub\\r )\\r sub/2sub\\r )\\r sub/6sub\\r (H\\r sub/2sub\\r O) and (V\\r sub/3sub\\r (μ\\r sub/3sub\\r -O)O\\r sub/2sub\\r )(μ\\r sub/2sub\\r -O\\r sub/2sub\\r P(CH\\r sub/2sub\\r C\\r sub/6sub\\r H\\r sub/5sub\\r )\\r sub/2sub\\r )\\r sub/6sub\\r (py), and Polymeric Complexes of Stoichiometry (VO(O\\r sub/2sub\\r PR\\r sub/2sub\\r )\\r sub/2sub\\r )\\r sub/∞sub\\r , R\\r sub/2sub\\r = Ph\\r sub/2sub\\r and\\r o-\\r (CH\\r sub/2sub\\r )\\r sub/2sub\\r (C\\r sub/6sub\\r H\\r sub/4sub\\r )